Speaker box



1.1 is a front elevation view of a speaker box showing our new design;

1.2 is a back elevation view thereof;

1.3 is a left side elevation view thereof;

1.4 is a right side elevation view thereof;

1.5 is a top plan view thereof;

1.6 is a bottom plan view thereof; and,

1.7 is a perspective view thereof.

The broken lines shown in the drawings depict portions of the speaker box that form no part of the claimed design. 

CLAIM The ornamental design for a speaker box, as shown and described. 